Home / 12,106.20-18,159.30-7,710.60

Finding the Fourth Proportional to 12,106.20, 18,159.30 and 7,710.60

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Solution

The fourth proportional to 12,106.20, 18,159.30 and 7,710.60 is: 11,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.20 : 18,159.30 = 7,710.60 : x
  2. Step 2: Convert to fraction form
    12,106.20/18,159.30 = 7,710.60/x
  3. Step 3: Cross multiply
    12,106.20x = 18,159.30 × 7,710.60
  4. Step 4: Simplify right side
    12,106.20x = 140,019,098.58
  5. Step 5: Solve for x
    x = 140,019,098.58/12,106.20
  6. Step 6: Final answer
    x = 11,565.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.